Titled “Gravity,” the latest video focuses on the extreme durability of Caterpillar’s B15 Android smartphone. Released last year to a lot of positive reviews, the B15 is Cat’s first smartphone and is military spec with an IP67 rating. The device is waterproof, dustproof and will survive a 5.9-foot drop to hard concrete. The device can also operate in temperatures ranging from 122F to -4F.

But Cat wanted to put those impressive specs to the test, and boy did they ever.

First, the phone is dropped 35 feet into a deep pool of water. And if that wasn’t enough, Cat then stacked 600 B15s in two rows and drove over them with the 4.6-ton 277D multi-terrain loader.